Crashing Firefox browser frequently

HP G72-253NR WIN 7 HP SP1 x64 FIREFOX 29.0.1 HTTPS-E 3.5.1

Browser crashing frequently each day; sends its Mozilla report then restarts.

I did try the HTTPS-E 4.x development version. Went back to the 3.5.1 with same problem.

Have tried disabling all my extensions (~25 active; ~20 disabled), then adding two to four back per day. Adding HTTPS-E last resulted in return of crashing.

Trac:
Username: sirald66